Installed a RCC Turbo Stage 1 on an 08 Gen II wth ~3k miles. Tuned by Johnny Cheese. 75 miles ridden hard but not sustained speed with no problems. I did get what I would call vapor lock once after stopping at a store. After waiting & fiddling with fuel line routing, ran fine. I am not clear if it was crimped fuel line or vapor lock but I re-did fuel routing to make sure.
1st run at Texas Mile (March) I lost compression in all 4 cylinders. Bummer. It was am on Friday and not too hot. I was running pump gas.
Pistons were scored wth the inner 2 having significant damage on both sides and outer pistons having worse damage on the inside. The cylinder had detonation signs and scored linings. Head gasket was intact (no oil/coolant mix). Oil smelled burnt but was otherwise fine.
Theories:
1. Bad gas
2. Fuel delivery problem (the pressure was still 42-43 after losing engine)
3. Had a lean condition (fuel map issue or bad MAP sensor?)
4. Improper warm up. Theory that pistons warmed too quick. Other theory that cylinder warmed up to quick. I had ridden 3/4 ile to start but sat in queue for a while. It did idle for minutes before I hit the line and temp showed warm
5. Theory that a pinch in waste gate vacuum hose could have caused turbo to go past 4 lbs. I was looking at road during run so did not notice gauge.
6. The coolant had air so coolant did not cycle and got to hot.
I am not a master mechanic but was able to build a zx14 nitrous bike and take to 202. This was my first turbo and I know it is something I did to the bike as a stock bike would not have done this (grin)
Kudos to Richard. He lived up to his reputation and has answered questions and helped debug far after the sale.
I am now building engine (new cylinder, SS valves, valve springs, wossner turbo pistons, studs). Unfortunately I have no clear root cause. Before a repeat I would appreciate any opinions on what could have done this or suggestions to avoid.
Thanks,
Derek
1st run at Texas Mile (March) I lost compression in all 4 cylinders. Bummer. It was am on Friday and not too hot. I was running pump gas.
Pistons were scored wth the inner 2 having significant damage on both sides and outer pistons having worse damage on the inside. The cylinder had detonation signs and scored linings. Head gasket was intact (no oil/coolant mix). Oil smelled burnt but was otherwise fine.
Theories:
1. Bad gas
2. Fuel delivery problem (the pressure was still 42-43 after losing engine)
3. Had a lean condition (fuel map issue or bad MAP sensor?)
4. Improper warm up. Theory that pistons warmed too quick. Other theory that cylinder warmed up to quick. I had ridden 3/4 ile to start but sat in queue for a while. It did idle for minutes before I hit the line and temp showed warm
5. Theory that a pinch in waste gate vacuum hose could have caused turbo to go past 4 lbs. I was looking at road during run so did not notice gauge.
6. The coolant had air so coolant did not cycle and got to hot.
I am not a master mechanic but was able to build a zx14 nitrous bike and take to 202. This was my first turbo and I know it is something I did to the bike as a stock bike would not have done this (grin)
Kudos to Richard. He lived up to his reputation and has answered questions and helped debug far after the sale.
I am now building engine (new cylinder, SS valves, valve springs, wossner turbo pistons, studs). Unfortunately I have no clear root cause. Before a repeat I would appreciate any opinions on what could have done this or suggestions to avoid.
Thanks,
Derek
